Anton V. Kalashnikov
Pyatigorsk Medical and Pharmaceutical Institute – a branch of Volgograd State Medical University
Russian Federation

Candidate of Sciences (Medicine), the Head of the Department of Surgical Disciplines 

11, Kalinin ave., Pyatigorsk, 357532

Alexander A. Vorobiev
Federal State Budgetary Institution of Higher Education "Volgograd State Medical University"
Russian Federation

Honored Scientist of the Russian Federation, Doctor of Sciences (Medicine), Professor, the Head of the Department of Operative Surgery and Topographic Anatomy 

1, pl. Fallen Fighters, Volgograd, 400131

Svetlana A. Kalashnikova
Pyatigorsk Medical and Pharmaceutical Institute – a branch of Volgograd State Medical University
Russian Federation

Doctor of Sciences (Medicine), Associate Professor, the Head of the Department of Morphology

11, Kalinin ave., Pyatigorsk, 357532

Dmitry Sh. Salimov
Federal State Institution “Central Military Clinical Hospital named after P.V. Mandryka"
Russian Federation

Candidate of Sciences (Medicine), the Head of the 2-nd Surgical Department 

8A, Bolshaya Olenya street, Moscow, 107076